Mong

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Mong is a classic two-player electronic tennis game. Be sure to click the playing field before you start, or your keystrokes will not be recognized.
Contributed by: Rob Lockhart (March 2011)
Open content licensed under CC BY-NC-SA
Snapshots
Details
If you want to consider this Demonstration academically, there are a large number of elastic collisions occurring; see Elastic collision.
Permanent Citation
"Mong"
http://demonstrations.wolfram.com/Mong/
Wolfram Demonstrations Project
Published: March 7 2011